돌아다니다 보면...  책갈피 기능 + 펼침기능 있던데... (1 페이지에)

아래처럼 테이블로 되어 있지 않아도 되고, 같아도 상관없어요.(소스부탁)

예1)
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|             1                          |                                  가                                         |
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|             2                          |                                   나                                         |
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|              3      <--- 클릭     |                                  다                                         |
                                           |       늘어남                                                            |
                                           |       늘어남                                                            |
                                           |       늘어남                                                            |
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|              4                          |                                  라                                         |
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|              5                          |                                  마                                         |
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|               6                         |                                  바                                         |
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|                7                        |                                  사                                         |
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|                8                        |                                  아                                         |
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예2)


1    2    3<---클릭    4    5   6    7   8


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|                           가                                                                                          |
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|                           나                                                                                         |
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|                           다                                                                                        |

                          늘어남 

|                                                                                                                       |
|                                                                                                                       |
|                                                                                                                       |
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|                           라                                                                                        |
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|                           마                                                                                         |
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|                           바                                                                                        |
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|                           사                                                                                          |
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|                8                        |                                  아                                         |
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